地质时间不仅漫长,而且其事件的发生是不规则的。
You are never too old to set another goal or to dream a new dream.
化学工业是现代文明的支柱,我们必须以应有的责任感对待它。
【释义】人总是旧友可贵,物总是新的好。
I never really thought about being a director. I just wanted to make good movies.